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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ho(FeGe)2 by Materials Project

HoFe2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ho is bonded in a 8-coordinate geometry to eight equivalent Fe and eight equivalent Ge atoms. All Ho–Fe bond lengths are 3.32 Å. All Ho–Ge bond lengths are 3.05 Å. Fe is bonded to four equivalent Ho and four equivalent Ge atoms to form a mixture of edge, corner, and face-sharing FeHo4Ge4 tetrahedra. All Fe–Ge bond lengths are 2.43 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ho, four equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.51 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3(FeGe)4 by Materials Project

Ho3(FeGe)4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 12-coordinate geometry to six equivalent Fe and six Ge atoms. There are two shorter (2.92 Å) and four longer (3.06 Å) Ho–Fe bond lengths. There are two shorter (2.92 Å) and four longer (3.03 Å) Ho–Ge bond lengths. In the second Ho site, Ho is bonded to six Ge atoms to form distorted edge-sharing HoGe6 octahedra. There are four shorter (2.93 Å) and two longer (2.98 Å) Ho–Ge bond lengths. Fe is bonded in a 4-coordinate geometry to three equivalent Ho, one Fe, and four Ge atoms. The Fe–Fe bond length is 2.43 Å. There are a spread of Fe–Ge bond distances ranging from 2.50–2.57 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Ho and six equivalent Fe atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Ho, two equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.63 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HoFeGe2 by Materials Project

HoFeGe2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ho is bonded in a 10-coordinate geometry to four equivalent Fe and ten Ge atoms. All Ho–Fe bond lengths are 3.18 Å. There are a spread of Ho–Ge bond distances ranging from 3.11–3.27 Å. Fe is bonded in a 5-coordinate geometry to four equivalent Ho and five Ge atoms. There are a spread of Fe–Ge bond distances ranging from 2.26–2.38 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Ho, one Fe, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.58 Å. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Ho and four equivalent Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho(Fe2Ge)2 by Materials Project

HoFe4Ge2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Ho is bonded in a 6-coordinate geometry to twelve equivalent Fe and six equivalent Ge atoms. There are four shorter (3.17 Å) and eight longer (3.27 Å) Ho–Fe bond lengths. There are two shorter (2.91 Å) and four longer (2.94 Å) Ho–Ge bond lengths. Fe is bonded in a 3-coordinate geometry to three equivalent Ho and three equivalent Ge atoms. There are one shorter (2.43 Å) and two longer (2.44 Å) Fe–Ge bond lengths. Ge is bonded in a 9-coordinate geometry to three equivalent Ho and six equivalent Fe atoms.

36 MATERIALS SCIENCE↗